Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 53
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
151
Cs
55
0
150.96219
+3/2
50 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
153
Ba
56
0
152.95961
-5/2
80 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
155
La
57
0
154.95835
+5/2
60 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
157
Ce
58
0
156.95634
+7/2
50 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
159
Pr
59
0
158.955501
-5/2
100 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
161
Nd
60
0
160.953879
-1/2
200 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
163
Pm
61
0
162.95368
-5/2
200 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
165
Sm
62
0
164.95298
-5/2
200 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
167
Eu
63
0
166.95321
unbekannt
200 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
169
Gd
64
0
168.95287
-7/2
1 Sekunden
β
-
>0%
nβ
-
>0%
171
Tb
65
0
170.9533
+3/2
500 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
173
Dy
66
0
172.953
+9/2
2 Sekunden
β
-
100%
175
Ho
67
0
174.95405
-7/2
5 Sekunden
β
-
100%
177
Er
68
0
176.95405
-1/2
3 Sekunden
β
-
100%
179
Tm
69
0
178.955339
+1/2
20 Sekunden
β
-
100%
181
Yb
70
0
180.95615
-3/2
1 Minuten
β
-
100%
183
Lu
71
0
182.95757
+7/2
58 Sekunden
β
-
100%
185
Hf
72
0
184.95882
-3/2
3 Minuten 30 Sekunden
β
-
100%
187
Ta
73
0
186.96053
+7/2
2 Minuten
β
-
100%
189
W
74
0
188.961913
-3/2
10 Minuten 42 Sekunden
β
-
100%
191
Re
75
0
190.963126
+3/2
9 Minuten 48 Sekunden
β
-
100%
193
Os
76
0
192.964152
-3/2
1 Tage 6 Stunden 6 Minuten 36 Sekunden
β
-
100%
195
Ir
77
0
194.96598
+3/2
2 Stunden 30 Minuten
β
-
100%
195m
Ir
77
0.1
194.966088
-11/2
3 Stunden 48 Minuten
β
-
95%
it
5%
197
Pt
78
0
196.967341
-1/2
19 Stunden 53 Minuten 29 Sekunden
β
-
100%
197m
Pt
78
0.3996
196.96777
+13/2
1 Stunden 35 Minuten 24.6 Sekunden
it
96.7%
β
-
3.3%
199
Au
79
0
198.968765
+3/2
3 Tage 3 Stunden 20 Minuten
β
-
100%
199m
Au
79
0.5489
198.969355
-11/2
440 Mikrosekunden (μs)
it
100%
201
Hg
80
0
200.970303
-3/2
13.18
stabil
201m
Hg
80
0.7662
200.971125
+13/2
94 Mikrosekunden (μs)
it
100%
203
Tl
81
0
202.972344
+1/2
29.52
stabil
203m
Tl
81
3.4
202.975888
+25/2
7.7 Mikrosekunden (μs)
it
100%
205
Pb
82
0
204.974482
-5/2
173000 Jahre
ε
100%
205m
Pb
82
0.0023
204.974484
-1/2
2.4 Mikrosekunden (μs)
it
100%
205m
Pb
82
1.0138
204.97557
+13/2
5.6 Millisekunden (ms)
it
100%
205m
Pb
82
3.1957
204.977912
-25/2
217 Nanosekunden (ns)
it
100%
207
Bi
83
0
206.978471
-9/2
32 Jahre 328 Tage
ε
100%
207m
Bi
83
2.1015
206.980727
+23/2
182 Mikrosekunden (μs)
it
100%
209
Po
84
0
208.98243
-1/2
102 Jahre
α
99.52%
ε
0.48%
211
At
85
0
210.987496
-9/2
7 Stunden 12 Minuten 50 Sekunden
ε
58.2%
α
41.8%
213
Rn
86
0
212.993883
+9/2
19.5 Millisekunden (ms)
α
100%
215
Fr
87
0
215.000341
-9/2
86 Nanosekunden (ns)
α
100%
217
Ra
88
0
217.00632
+9/2
1.6 Mikrosekunden (μs)
α
100%
219
Ac
89
0
219.01242
-9/2
11.8 Mikrosekunden (μs)
α
100%
221
Th
90
0
221.018183
+7/2
1.7 Millisekunden (ms)
α
100%
223
Pa
91
0
223.023962
unbekannt
5.1 Millisekunden (ms)
α
100%
225
U
92
0
225.029391
+5/2
84 Millisekunden (ms)
α
100%
227
Np
93
0
227.034957
-5/2
510 Millisekunden (ms)
α
100%
229
Pu
94
0
229.040149
+3/2
1 Minuten 30 Sekunden
α
100%
231
Am
95
0
231.04556
unbekannt
10 Sekunden
α
>0%
ε
>0%
233
Cm
96
0
233.050771
+3/2
1 Minuten
α
>0%
ε
>0%
235
Bk
97
0
235.05658
+7/2
20 Sekunden
α
100%
ε
>0%
237
Cf
98
0
237.06207
+5/2
2.1 Sekunden
α
90%
f
10%